Publications by authors named "Ahsan Nazeer"

Human trafficking in the child and adolescent is a global public health crisis that can be divided into sex trafficking, labor trafficking and organ trafficking. This discussion considers basic terminology in this area, sociodemographic information on these victims, negative effects or repercussions from such egregious actions forced on the victims, issues of screening for healthcare providers based on specific risk factors/indicators, and information regarding screening tools as well as management principles for healthcare professionals. These trafficked persons are seen in varied practice settings such as primary care offices, emergency departments, street medicine operations, and others.

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Article Synopsis
  • Autism spectrum disorder (ASD) prevalence in Qatar is around 1.1%, but genetic research in the region is limited; the BARAKA-Qatar Study aims to create a biorepository for ASD families to facilitate future research.
  • * Whole-genome sequencing (WGS) analysis of 100 families revealed potentially pathogenic variants in 27% of them, with a notable contribution from dominant and homozygous variants, particularly in consanguineous families.
  • * The study also identified 28 new candidate genes related to ASD, emphasizing the importance of including under-represented populations in genetic research to understand the disorder better.
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The dearth of child and adolescent mental health services (CAMHS) is a global problem. Integrating CAMHS in primary care has been offered as a solution. We sampled integrated care perspectives from colleagues around the world.

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Background: Studies using structural magnetic resonance imaging (MRI) volumetrics showed smaller hippocampal volume in patients with post-traumatic stress disorder (PTSD). These studies were cross-sectional and did not address whether smaller volume is secondary to stress-induced damage, or whether pre-existing factors account for the findings. The purpose of this study was to use a co-twin case control design to assess the relative contribution of genetic and environmental factors to hippocampal volume in PTSD.

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Obsessive-compulsive disorder (OCD) can be found in about 4% of the general population and is characterized by various compulsions and obsessions that interfere with the person's quality of life from a mild to severe degree. The following discussion reflects on current concepts in this condition, including its epidemiology and etiologic underpinnings (behavioral, neurological, immunological, gastroenterological, as well as genetic). The interplay of PANS and PANDAS are included in this review.

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Sources Of Data: This article is based on key recent published literature including international guidelines and relevant reviews and meta-analyses. Authors have also supplemented this material with their own clinical experience.

Areas Of Agreement: There is an agreement that autism spectrum disorder (ASD) have a strong hereditary component.

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Attention-deficit hyperactivity disorder (ADHD) is a common neurodevelopmental disorder that affects the child and adolescent population. It is characterized by impairment in attention/concentration, hyperactivity, and impulsivity, all of which can impact performance of athletes. ADHD treatment within the athletic population is a unique challenge.

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The last decade has seen an increase of interest in autism spectrum disorders (ASD). With the prevalence now approaching 1%, children with ASD are usually first evaluated by clinicians working in primary care, such as pediatricians and family practitioners. Although classic autism is easy to recognize, differentiating autism from other spectrum disorders and comorbid conditions is not always simple.

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This article provides an overview of the psychopharmacologic management of irritability, hyperactivity, and repetitive behaviors in children and adolescents with autism spectrum disorder. A review of the current literature on medications used to treat these conditions with emphasis on randomized controlled trials is presented.

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Attention deficit hyperactivity disorder (ADHD) is a neurobehavioral developmental disorder found in 3% to 8% of children and adolescents. An important part of ADHD management is psychopharmacology, which includes stimulants, norepinephrine reuptake inhibitors, alpha-2 agonists, and antidepressants. Medications with the best evidence-based support for ADHD management are the stimulants methylphenidate and amphetamine.

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Alterations in the hypothalamic-pituitary-adrenal (HPA) axis and hippocampal-based memory have been associated with posttraumatic stress disorder (PTSD), and the administration of exogenous glucocorticoids has been shown to result in a transient verbal declarative memory impairment in healthy human subjects. The purpose of this study was to assess the effects of the glucocorticoid dexamethasone on verbal declarative memory function in patients with PTSD. Forty-two men and women with (n=14) and without (n=28) PTSD received placebo or dexamethasone (1 and 2 mg on two successive days) in a double-blind, randomized fashion.

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Context: We previously used positron emission tomography (PET) measurement of brain metabolism with 18fluorodeoxyglucose to show that patients receiving selective serotonin reuptake inhibitors (SSRIs) who have a tryptophan depletion-induced return of depressive symptoms have an acute decrease in metabolism in orbitofrontal cortex, dorsolateral prefrontal cortex, and thalamus. Many patients with depression in remission while taking norepinephrine reuptake inhibitors (NRIs) (but not SSRIs) experience a return of depressive symptoms with depletion of norepinephrine and dopamine using alpha-methylparatyrosine (AMPT).

Objective: To assess brain metabolic correlates of AMPT administration in patients with depression in remission while receiving NRIs.

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Objective: Animal studies have suggested that early stress is associated with alterations in the hippocampus, a brain area that plays a critical role in learning and memory. The purpose of this study was to measure both hippocampal structure and function in women with and without early childhood sexual abuse and the diagnosis of posttraumatic stress disorder (PTSD).

Method: Thirty-three women participated in this study, including women with early childhood sexual abuse and PTSD (N=10), women with abuse without PTSD (N=12), and women without abuse or PTSD (N=11).

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Substance use by adolescents can lead to mortality, physical and social morbidity, and a brain disorder called substance dependence if allowed to progress to chronic, repetitive self-administration. Substance abuse and dependence can begin in adolescence or adulthood, but many of the attitudes and behaviors that affect risk become established during adolescence. Genetic risk factors have been identified for at least two distinct disorders and more are under active study to determine the cause and pathophysiology of addictive disorders.

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Background: Functional neuroimaging studies have implicated dysfunction of orbitofrontal cortex in the symptoms of depression, and a recent postmortem study of depressed patients found reduced density of neurons and glia in this area. The purpose of this study was to measure volume of orbitofrontal cortex and other frontal cortical subregions in patients with major depression.

Methods: Magnetic resonance imaging was used to measure volume of the orbitofrontal cortex and other frontal cortical regions in patients with major depression in remission (n = 15) and comparison subjects (n = 20).

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